• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 26 Issue 3
Jun.  2013
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Article Contents
XU Ming. Centrifuge Model Test of Clay Tunnel with Embedded Small Duct Grouting[J]. Journal of Southwest Jiaotong University, 2013, 26(3): 423-427,434. doi: 10.3969/j.issn.0258-2724.2013.03.005
Citation: XU Ming. Centrifuge Model Test of Clay Tunnel with Embedded Small Duct Grouting[J]. Journal of Southwest Jiaotong University, 2013, 26(3): 423-427,434. doi: 10.3969/j.issn.0258-2724.2013.03.005

Centrifuge Model Test of Clay Tunnel with Embedded Small Duct Grouting

doi: 10.3969/j.issn.0258-2724.2013.03.005
  • Received Date: 16 May 2012
  • Publish Date: 25 Jun 2013
  • Plane strain centrifuge model tests were carried out to investigate the influence of small duct grouting range on tunnel stability and ground subsidence. The consolidation principle and performance optimization of advanced duct grouting were discussed. The tests were carried out in a circular cavity with stiff resin inclusions embedded around the periphery of the tunnel in over-consolidated clay in plane strain. The experimental results show that with the extension of ducts' circumferential setting range, tunnel stability is improved, tunnel plastic zone and slip plane transfer from tunnel crown to its invert, and deep soil becomes involved in bearing load. The shoulder reinforcement scheme is one of economic ways to improve the consolidation effect in accordance with the findings. When the cover-span ratio equals to 2, this scheme can be reduce the maximum ground subsidence in clay tunnel construction by 10%.

     

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